We have a 55 gallon tank with a Rena XP2 filter block. From bottom to top we use 2-20, then 2-30, in the next basket activated carbon, then biochemical stars with two microfiltration pads to complete it. Works very well. Change filters every 2-3 months and never had any problems although we tend to overfeed :-( Haven't noticed any real difference to the SUPER filters.
🌿 Enhance Your Freshwater Fish Tank with Greenpro Java Fern on Driftwood Live Aquarium Plants
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